Having owned both boats and restaurants, my first shortcoming on propane is the lack of making the same BTU's as nat gas. However, I would choose propane over a microwave any day of the week!!!!
Microwaves destroy a food's nutritional value.
If you have any doubts, get two small potted plants of the same variety and make sure one of the plants is only watered with tap water. Water the other plant with water that has been microwaved to the boiling point then let it cool down to room temp before you water the plant.
You will be shocked at the results of how each plant develops.